Year % change from 1990 1991 -5.26476822249222 1992 20.9903422343227 1993 7.3335609574402 1994 0.459830257451732 1995 8.15167747142136 1996 -6.33364077368547 1997 -2.20957972312631 1998 38.3517058505308 1999 -3.99812875247209 2000 -1.14735852570526 2001 -12.3493468370596 2002 -1.23826036059206 2003 -7.31161148999192 2004 4.52447254764587 2005 9.61830097819243 2006 -7.54241346588742 2007 -6.36268501849077 2008 -1.66771610248406 2009 21.6282070610772 2010 7.35174132441756 2011 8.42525873766173 2012 9.49877615090591